Birdy uses her pin-up alter ego to help Tsutomu make a love connection with Sayaka, but everything goes horribly wrong when a Federation marionette is added to the equation! (Source: FUNimation) This OVA connects the first and second Birdy the Mighty Decode seasons.
Anix is the best site to watch Birdy the Mighty: Decode OVA
SUB online, or you can even watch Birdy the Mighty: Decode OVA
DUB in HD quality. You can also find A-1 Pictures
anime on Anix website.